CVE-2026-28522: high-severity vulnerability in Tuya arduino-TuyaOpen
arduino-TuyaOpen WiFiUDP Null Pointer Dereference Denial of Service
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.1epss 0.3%
arduino-TuyaOpen before version 1.2.1 contains a null pointer dereference vulnerability in the WiFiUDP component. An attacker on the same local area network can send a large volume of malicious UDP packets that trigger a null pointer dereference, resulting in a denial-of-service condition.
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected products
Tuya · arduino-TuyaOpenRelated CVEs — Tuya arduino-TuyaOpen
In the same product, most dangerous first.
CVE-2026-28519HIGHarduino-TuyaOpen DnsServer Heap-Based Buffer Overflow Remote Code ExecutionEPSS 0.4%CVE-2026-28521HIGHarduino-TuyaOpen TuyaIoT Out-of-Bounds Memory Read Information DisclosureEPSS 0.2%CVE-2026-28520HIGHarduino-TuyaOpen WiFiMulti Single-Byte Buffer Overflow Remote Code ExecutionEPSS 0.2%